To suppress drop of reliability of knocking determination result in a multi-fuel internal combustion engine provided with an intake air injection injector and a cylinder injection injector.
In a knocking determination device for the multi-fuel internal combustion engine determining knocking of the multi-fuel internal combustion engine provided with the intake air injection injector 122 injecting one of multi-fuel to an intake air system and the cylinder injection injector 112 directly injecting other of multi-fuel in a combustion chamber based on output signal of a knock sensor 148 during predetermined knock determination period, a determination period change means changing knock determination period based on change of injection ratio of fuel injection quantity injected from each injector.
ODA TOMIHISA
SUGIYAMA KOSEKI
| JP2005113883A | 2005-04-28 | |||
| JPS63173829A | 1988-07-18 | |||
| JP2000179368A | 2000-06-27 | |||
| JP2004251218A | 2004-09-09 | |||
| JPH06129334A | 1994-05-10 |
Kazuo Abe